To Dr. or to wait

Hi so we are TTC I’m 22 days late and cycle day 64. I’m irregular and started working out continuously 3 wks ago as well as eating better! I’m not on birth control either! And I’ve taken 2 tests both negative in a 2 week span. Do you think Aunt Flo is more in a delay bc of all the changes? Or should I go to see if there is a underlying problem? I had a physical last year and all the panels came out good and neg for PCOS.. also anyone in the same boat?